Fundamentals

History of money: from commodity money to the modern monetary system

By Daniel Sardá · April 23, 2026

# History of money: from commodity money to the modern monetary system

The history of money is not just the history of objects used to pay. It is, above all, the history of how the relationship among value, trust, political power and trade changed over time. For centuries, different societies used concrete goods as money; later precious metals came to dominate; still later came convertible certificates and paper money; and finally the world arrived at a monetary system based mainly on fiat currencies, bank deposits and central banks. That evolution is easy to follow through the thread proposed by *Britannica*’s entry on money, its summary of the history of money and the European Central Bank’s explainer on what money is.

What money is

In economic terms, money is whatever a society accepts in a relatively general way as:

*Britannica*’s classical definition of money presents it as a commodity or instrument accepted by general consent as a medium of economic exchange, the medium in which prices and values are expressed and the chief measure of wealth. The European Central Bank, in its public explainer on money, summarises the same functions in a more pedagogical way.

An important idea should be fixed from the start: money did not begin as coin or banknote. Before that there were objects, goods, metal pieces, certificates and other socially accepted forms of payment.

What was used as money before coins

Long before coined money, different societies used very different objects as money or proto-money. At this point the history of money is much more plural than people usually imagine. In its survey of the brief and fascinating history of money, *Britannica* mentions examples such as:

*Britannica*’s general entry on money also adds examples such as cattle, tobacco, cigarettes and other objects that, in certain contexts, fulfilled monetary functions.

The point is not to force the claim that all of this was “modern money,” but to understand the principle: if an object is sufficiently accepted, recognisable, transferable and relatively trustworthy, it can perform some of the functions of money. That is why monetary history begins with very different concrete objects, not with a single universal model.

Why metals became so important

Over time, metals—especially gold and silver—gained a privileged place as money because they combined several especially useful monetary properties:

*Britannica*’s explanation of the origins of coins stresses exactly this: metal became popular as a medium of exchange because of those qualities, and true coinage appeared when metal pieces with relatively guaranteed weight and purity began to circulate with marks of authority.

That step was decisive because it allowed the combination of something very important: relatively concentrated value and standardisation. It was no longer just a matter of exchanging a useful good, but of using a monetary support that could be measured, divided and recognised more easily.

The first coins

The use of metal as money is very old, but the first standardised coins are usually associated with the kingdom of Lydia, in Asia Minor, in the seventh century BCE. *Britannica*’s explanation of the origin of coins notes that these first coins were made of electrum, a natural alloy of gold and silver.

That detail matters because it helps distinguish two stages:

1. the ancient use of metal by weight or in not fully standardised pieces; 2. and the appearance of minted coinage, with recognisable authority and more uniform value.

At the same time, the story should not be presented as a single line. China developed its own trajectories of metallic money and other early forms of monetisation. Monetary history was multicentric, not a single process radiating from one place.

Gold and silver: why they dominated for centuries

For centuries, gold and silver dominated much of global monetary history. But they did not do so in exactly the same way.

The role of gold

Gold was especially valuable as money because it concentrated much value in little weight, resisted deterioration and had a relatively limited supply. That made it ideal for large payments, reserves and monetary anchors. The House of Lords Library, in its explanation of the gold standard and the Bank of England, summarises that the United Kingdom operated under a formal or de facto gold standard for much of the period 1717–1931, making gold a central anchor of the international monetary system in the nineteenth and early twentieth centuries.

The role of silver

Silver, however, was equally or even more important than gold in many contexts of everyday circulation. *Britannica*’s explanation of standards of value and its materials on the monetary history of China show that silver played an enormous role in Eurasia, the Americas and global trade. This is key because it breaks a common simplification: the history of money was not only the history of gold. For centuries, silver was decisive in everyday payments, regional trade and international circuits.

Bimetallism: gold and silver together

One of the great historical attempts to organise both metals within a single system was bimetallism. *Britannica*’s entry on bimetallism explains that such systems legally defined the monetary unit in terms of fixed quantities of gold and silver.

The apparent advantage was clear: to use both metals and broaden the available monetary base. But the problem was equally clear. If the legal ratio between gold and silver did not match the market ratio, one of the two metals tended to disappear from circulation. This is the kind of dynamic often summarised by Gresham’s law: when two monies circulate at the same legal valuation but different real value, the overvalued one drives the other out.

That is why bimetallism was historically important, but also unstable.

Commodity money

In one first major stage, money was above all commodity money. That is, objects that had monetary value and, at the same time, value outside their monetary use.

Classic examples are:

The great advantage of commodity money was that the object had utility or intrinsic value beyond its payment function. The disadvantage was that it could be difficult to transport, divide, verify or standardise. *Britannica*’s general entry on money helps make this point clearly: before more advanced monetary abstraction, money was tied to concrete supports with value of their own.

The move to representative money

A decisive transformation came with representative money. In this stage, banknotes, certificates or receipts began to circulate that could be redeemed for a determined quantity of gold or silver.

The European Central Bank, in its explanation of what money is, notes that for a time money consisted precisely of notes convertible into metal. *Britannica*’s own entry on metallic money and paper money allows this transition to be reconstructed.

This step was enormous because it made possible:

The key point for explaining it well is this: the banknote did not begin as “paper without backing,” but as a portable representation of metal stored somewhere else.

The birth of paper money

Paper money first appeared in China more than a thousand years ago. Both the European Central Bank’s explainer and *Britannica*’s history of money agree in noting that the first known use of paper money took place there.

Later, in Europe and other regions, paper began mainly as a promise of payment convertible into metal. That precision matters because it helps clarify the historical sequence:

1. commodity money; 2. standardised metallic money; 3. representative certificates; 4. and finally non-convertible fiat money.

Striking things that happened in the history of money

Monetary history is full of episodes that help explain the fragility of monetary trust.

China and the collapse of non-convertible paper

*Britannica*’s brief history of money recalls that, at certain moments of Chinese history, non-convertible paper money lost value severely. That experience anticipates a lesson that would reappear many times: paper can work, but if it is issued without credible limits or without sufficient trust, it can degrade quickly.

Sixteenth-century European inflation

The same source notes that the massive arrival of gold and silver from the Americas contributed to inflation in early modern Europe. This is fascinating because it shows that even metallic money can generate monetary problems if the supply of metal expands too rapidly.

Assignats, continental currency and other problematic experiments

*Britannica*’s entry on fiat money mentions historical examples of problematic fiat money or paper money, such as the continental currency of the American Revolution, the assignats of the French Revolution, the greenbacks of the U.S. Civil War and the German paper marks of the interwar period. All of these episodes show that the history of money is also the history of trust and its breakdowns.

What fiat money is

Fiat money is money that is not convertible into a commodity such as gold or silver. Its value depends on several things at the same time:

*Britannica*’s definition of fiat money is clear: it is money that acquires legal tender status by governmental decree or decision and whose metallic convertibility no longer exists. The Federal Reserve’s explanation of the collapse of the gold standard and the move to fiat money reinforces the same point: the value of fiat money depends on trust and on the institutional capacity to sustain the system.

That does not mean fiat money is “fake.” It means that its value no longer rests on a promise of conversion into metal, but on an institutional and social network of trust.

The gold standard

The gold standard was the system in which a currency was defined by a fixed quantity of gold and could, under normal conditions, be exchanged for gold at that parity. The House of Lords Library, explaining the history of the British gold standard, summarises its operation very well: whoever held Bank of England notes could convert them into gold at a fixed rate.

That system imposed monetary discipline, but it also imposed strong constraints. Maintaining convertibility required preserving sufficient reserves and sustaining confidence that the issuer could in fact fulfil the promise of conversion.

The end of the classical gold standard

The classical gold standard weakened through wars, financial crises, tensions over reserves and growing difficulty in maintaining convertibility. The House of Lords Library notes that the United Kingdom abandoned the gold standard in 1931, when defending the parity of the pound became unsustainable.

That abandonment was not an isolated episode. It reflected a wider transformation: the old monetary world anchored in metal no longer fit well with mass economies, modern wars, active central banks and new macroeconomic policy demands.

What Bretton Woods was

After the monetary chaos of the interwar period and the Second World War, countries attempted to reconstruct a more stable international monetary order. That is how Bretton Woods was born. Federal Reserve History, in its essay on the creation of the system, recalls that in July 1944, at a conference held in New Hampshire with delegates from 44 countries, a new international monetary system was agreed upon.

From it emerged two central institutions:

Bretton Woods was, in essence, an attempt to reconstruct international monetary stability without returning exactly to the old classical gold standard.

How Bretton Woods worked

The Bretton Woods system was not a pure gold standard. It worked like this:

Federal Reserve History explains that currencies would remain fixed but adjustable against the dollar, while the dollar remained convertible into gold at 35 dollars per ounce. The system aimed to combine:

What happened in 1971

Bretton Woods lasted until 1971, when the United States suspended the convertibility of the dollar into gold. Federal Reserve History states it directly: that was the moment when the system began to end. The Federal Reserve’s explanation of fiat money and the collapse of the gold standard also presents it as the decisive move toward a world of non-convertible fiat currencies.

From then on, the international monetary system ceased to rest on metal and came to rely on state fiat currencies, more flexible exchange rates and far greater central-bank prominence.

The modern monetary system

Today we live in a monetary system based mainly on:

*Britannica*’s explanation of modern monetary systems notes that the public holds money mainly in two forms: currency (cash) and bank deposits. But here a decisive point appears, one that often surprises people: most modern money does not exist as banknotes, but as bank deposits.

The Bank of England, in its now classic explanation of money creation in the modern economy, stresses precisely that point: most money in modern economies is created by commercial banks when they make loans. The European Central Bank adds that central bank money appears to the public mainly as banknotes, and to the banking system as reserves.

What money “is” today, in practice

In practice, today’s money has several layers:

A) Cash

Banknotes and coins issued under the authority of the central bank or the state.

B) Bank deposits

Most money used in everyday life exists as bank balances. It is not simply a representation of stored banknotes: it forms part of the money-creation process through credit.

C) Reserves

Central-bank money used within the banking system for settlement, stability and payments among institutions.

This point is fundamental because it breaks a very common belief: that “real” money would be only physical cash. In reality, modern money is a hierarchical structure of liabilities, deposits, reserves and institutional trust.

What role gold and silver still play today

Neither gold nor silver is today the direct basis of legal money in most countries. Even so, they remain relevant.

Gold

Gold remains important as:

The House of Lords Library, in discussing the gold standard, and the debate collected by *Britannica* on the gold standard help show why gold still carries such a strong symbolic weight.

Silver

Silver is less central monetarily today, but it retains historical, financial and industrial relevance. Its present role is smaller than gold’s in the official monetary architecture, but it remains important for understanding the long history of money.

SDRs and the current international monetary architecture

In the current system, besides national currencies and central-bank reserves, there exists an international reserve asset issued by the IMF: the Special Drawing Rights (SDRs). The IMF, in its factsheet on what the SDR is, makes clear that it is not properly a currency, but an international reserve asset.

Its value is based on a basket of five currencies:

That shows something important: the current monetary system does not rest on metal, but on a network of state currencies, international institutions and organised trust.

Conclusion

The history of money is the history of a progressive dematerialisation of monetary value. First circulated objects with value of their own; later precious metals dominated; then came convertible certificates and paper money; and finally the world arrived at a system in which most money exists as institutionalised trust in banks, central banks and states.

The key to the subject is not only to list ancient coins or modern banknotes. What matters most is to understand the deeper thread:

money has always been a social and political institution. Its physical support changes, but behind each stage the same questions reappear: who issues it, who guarantees it, who trusts it, what limits supply, and what sustains its value.

That is the strongest guiding thread in its entire history.